CBE
CBE is revision control system with integrated make-like functions written in pure Java. It can be used similar to CVS but offers some new features like renaming files (while still keeping the history) and using a database as backend (optional).

Gruntspud
Gruntspud is a graphical CVS client written in Java and licensed under the GPL. It uses the CVS client library from NetBeans as its core and supports nearly all of the commands that this library provides.

Java CVS Client
A library that implements a CVS protocol client in Java.

JavaSVN
JavaSVN is a pure java Subversion (SVN) client library. This means that users of the library, i.e. java applications do not have to include svn native binaries or javahl bindings to work with subversion repository. JavaSVN library is not only a 100% java replacement for javahl bindings, but also a library that provides high level of control over subversion repository operations.

JCVS
JCVS is a CVS client package written entirely in Java. JCVS provides a complete CVS client/server protocol package that allows any Java program to implement the complete suite of CVS operations. JCVS also provides a Swing based client that provides a commercial quality GUI client for CVS.

JSVN
The goal of JSVN is to develop a Java Swing client to access and manipulate a Subversion repository. JSVN is currently under active development. JSVN is nearly "feature-complete" and is very functional in its present state.

SourceJammer
SourceJammer is a source control and versioning system written in Java. It consists of a server-side component that maintains the files and version history, and handles check-in, check-out, etc. and other commands; and a client-side component that makes requests of the server and manages the files on the client-side file system.

StatCVS
StatCvs retrieves information from a CVS repository and generates various tables and charts describing the project development, e.g. timeline for the lines of code, contribution of each developer etc.

Superversion
Superversion is a multi-user distributed version control system based on change sets. It aims to be an industrial-strength, open source alternative to commercial solutions that is equally easy to use (or even easier) and similarly powerful. In fact, intuitive and efficient usability has been one of the top priorities in Superversion's development from the very beginning.